Ccircuitrocks·Sep 27Flip-Dot Display Turns Fluid Physics Into Sound on a Pi Pico 2 WFlip-Dot Display Turns Fluid: A maker swapped silent LEDs for a room-filling flip-dot panel that physically clacks out real fluid physics, steered by a…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Sep 9A Raspberry Pi 5 E Ink Frame That Paints the Birds It HearsA microphone under the eaves, a Raspberry Pi 5 running BirdNET locally, and an A4 E Ink panel that redraws itself with 1800s bird plates.3 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 31This ESP32 CHIP-8 Computer Runs on a Flame and a Stirling EngineESP32 CHIP-8 Computer Runs: No battery, no wall wart. A Stirling engine and a candle push enough current to run an ESP32 CHIP-8 machine with an OLED and a…3 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 30Wireless ESP32 Bike Brakes: ABS From Car Door Lock ActuatorsA fat-bike brake with no cable at all: ESP32 nodes talking over ESP-NOW drive car door lock actuators, unlocking ABS and an adjustable bite point.3 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 29An Arduino Nano ESP32 Robot Flips All 666 Pixels of This DisplayArduino Nano ESP32 Robot: Most flip-disc displays need one solenoid per pixel. This 666-tile panel uses a single Arduino Nano ESP32 gantry robot that…3 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 28A XIAO ESP32-S3 Clock Hiding Inside a Fake Linksys WRT RouterXIAO ESP32-S3 Clock Hiding: Glen Akins rebuilt the mid-2000s Linksys WRT router as an NTP desk clock, swapping a Raspberry Pi Zero 2 W for a 21 mm XIAO…3 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 3Build a Working Apollo DSKY Replica with Raspberry Pi and ArduinoWorking Apollo DSKY Replica: A maker rebuilt the Apollo DSKY with a Raspberry Pi, Arduinos, and open-source VirtualAGC.2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Aug 2ESP-KVM Turns an ESP32-P4 Into a $45 Open-Source IP KVMESP-KVM Turns ESP32-P4 Into: A locked-up PC with no monitor nearby? ESP-KVM runs on an ESP32-P4 and hands you keyboard, mouse, and screen control from a…2 min read·circuitrocks.hashnode.dev
Ccircuitrocks·Jul 31Open Sauce 2026: Maker Builds You Can Recreate This WeekendOpen Sauce 2026 Maker: Seven takeaways from Open Sauce 2026, plus how to recreate the show floor's cleverest ESP32 and Raspberry Pi builds on your own…2 min read·circuitrocks.hashnode.dev1
Ccircuitrocks·Jul 27Build a Palm-Sized POV TV with a Raspberry Pi PicoPalm-Sized POV TV Raspberry: A Raspberry Pi Pico, a stepper motor, and a spinning disk of holes turn five LEDs into a pocket-sized color TV you can build…2 min read·circuitrocks.hashnode.dev
